Nathan Zeigler is an independent researcher and linguist in Perfect Dark Zero.
Zeigler is a 39 year old overweight researcher who dissapeared on January 3rd, 2020. Dark Bail Bonds is tasked with finding him, tracking him across at least seven countries and three continents. Eventually he is captured by Killian in Hong Kong, but is eventually rescued by Jack Dark and Joanna Dark. But due to his injuries sustained by Killian and his gang, he dies at the end of Mission 2. Shortly before dying, he uses a neurodrive on Jack to implant important information to his subconscious as his own 'insurance policy'.